Convert Shape File to GeoJSON and Add to Page
|Download this zip archive of 1940 Oakland Census Areas shape files.||
In QGIS, examine your layer's shape file to determine its CRS. Make a note of the EPSG number.
Zip up (compress) your .shp, .dbf, and .shx (.prj optional) into a single .zip file
Go to Ogre, a web service that translates spatial files into GeoJSON using the ogr2ogr tool, upload the zip file, and convert.
The GeoJSON will look something like this
Save the result as filename.geojson. The conversion saves all the features in the shapefile as a single GeoJSON object of type "FeatureCollection."
We will assign this object to a variable (here, x):
We will use Leaflet's geoJson class to display the layer on the map. The generic syntax will look like this:
and we'll append the addTo(mapobject) method we have seen before.
We'll make a few other tweaks for display on this page but you can keep the original values. The <div> size has been reduced to 300x300 and the zoom changed to 10.
- GitHub calvinmetcalf / leaflet.shapefile. See also his "Projected Shapefiles in Leaflet" using Stamen water color tiles.
- Vallandingham, J. From Shapefile to GeoJSON in which the author uses QGIS and GDAL to convert census tract shapefiles into GEOJSON.
- Vance, Steve. 2012. Converting shapefiles to GeoJSON, and other format conversions describes how to use MyGeoConverter.
- digital-geography.com 2013. Convert shapefiles to geoJSON via web interface